I'm trying to imagine what the benefit would be. Could you explain?
You can "spend a penny" again. Although I haven't seen a pay toilet in over 30 years. (I don't mean the ones you put money on a plate at the entry, I mean one you put money INTO the door)
Most anti-metric folks I've spoken to don't like metric because an inch is an ugly amount of centimetres (or similar arguments). But by the same token, a centimetre is an ugly amount of inches...
(Also, most imperial units are now defined in terms of SI units.)
The main point is that with the advent of automatic computers the original reason for "metrification" is no longer valid.
> the original reason for "metrification" is no longer valid.
This seems like a silly argument given that humans still have to write these systems, and all of the engineering and physics papers use metric. So any system interacting with anything physical (which is all the systems that would care about the use of metric/imperial units) would be more easily written using metric units.
Not to mention that humans still do many tasks that computers don't, and in those cases metric still has the same upsides it has always had.